Specs

APPLICATION: Available to vehicles fitted with 1 up to 4-wire Zirconia oxygen sensor

INSTALLATION: universal with terminals or soldering

WIRE COLORS: black - grey - white - white

Working Theory

An automotive exhaust o2 sensor – had been invented by Bosch - is a small sensor inserted into the exhaust system of a gasoline engine to measure the concentration of oxygen remaining in the exhaust gas to make enable an Engine computer to control the efficacy of the combustion process in the engine. In most modern vehicles, like Merkur Scorpio these sensors are attached to the engine's exhaust manifold to determine whether the mixture of air and gasoline going into the engine is rich (too much fuel) or lean (too little fuel). This information is sent to your Merkur Scorpio's engine management, which adjusts the mix to deliver the engine the best possible fuel efficacy and lowest possible exhaust emissions.

Restore factory power capability and optimum fuel consumption as if your Merkur Scorpio was new.

Bosch patented ceramic technology affords best-in-class performance. The ceramic element is a critical part of the o2 sensor. Bosch's patented materials and processes ensure unparalleled quality and engine performance. Also it sounds reassuringly, major vehicle manufacturers place their trust in Bosch o2 sensors. Why replace? Failure of these exhaust air fuel sensors, either through normal aging, the use of leaded fuels, or due to fuel contamination with eg. silicones or silicates, can lead to damage of your Merkur Scorpio's converter and expensive repairs.

Compatibility

Our Bosch o2 sensor is available to all vehicles fitted with 1 up to 4-wire zirconia lambda probes, torqued in M18 x 1.5mm threaded nut. This exhaust air fuel sensor will fit your Merkur Scorpio if it is fitted with 1 up to 4-wire narrowband zirconia exhaust air fuel sensor, upstream or downstream. Not quite sure this oxygen sensor fits your Merkur Scorpio? Feel free to contact our Tech Support. Our trained Magnum product specialists are looking forward to respond to your inquiry. Heavy exhaust alterations like decat pipes, catless exhaust systems or headers trip CEL. In this instance the replacement of the lambda probe will not treat MIL issues. If so, you need to wire up oxygen sensor simulator to the aftercat exhaust air fuel sensor(s)' harness in order to get rid of PCM safe mode causes the engine run inefficiently ruining both horsepower and economy.

exhaust gas oxygen sensors are recommended to be replaced after each 50.000 miles - 80.000 km.

Bosch Merkur Scorpio o2 sensors outperform any other brand in regards to reliability and durability.

lambda probes are subject to extreme conditions. A properly functioning oxygen sensor significantly affects the basis for reliable engine operation and thus economy, emissions, and exhaust gas values. In common sense Bosch exhaust o2 sensors are unbeatable thanks to their long longevity, excellent operation, and optimum engine compatibility. They make a fundamental contribution to fuel saving the driver money and protecting the environment.It is not unlike on your Merkur Scorpio

All Bosch o2 sensors come with special features. Double laser-welded stainless steel body protects the sensor against contamination. Pre-coated threads with anti-seize compound guarantees easy install and removal at any time. If original air fuel sensors are worn on your Merkur Scorpio or give slow signal, you can save up to 10% a year in gasoline costs! Check your exhaust gas oxygen sensor frequently on your Merkur Scorpio and replace them with every second tune-up to improve vehicle power capability and reduce harmful exhaust emissions.

Oxygen sensors are used to reduce vehicle emissions, by ensuring that engines burn their fuel efficiently and cleanly. Robert Bosch GmbH introduced the first automotive lambda probe in 1976. The sensors were introduced in the US from about 1980, and were required on all models of cars in many countries in Europe in 1993. By measuring the proportion of oxygen in the remaining exhaust gas, and by knowing the volume and temperature of the air entering the cylinders amongst other things, an ECU can use look-up tables to determine the amount of fuel required to burn at the stoichiometric ratio (14.7:1 air:fuel by mass for gasoline) to ensure complete combustion. When an internal combustion engine is under high load (such as when using wide-open throttle) the oxygen sensor no longer operates, and the engine automatically enriches the mixture to both increase power and protect the engine.

Internal Design

The sensor element is a ceramic cylinder plated inside and out with porous platinum electrodes; the whole assembly is protected by a metal gauze. It operates by measuring the difference in oxygen between the exhaust gas and the external air, and generates a voltage or changes its resistance depending on the difference between the two. The sensors only work effectively when heated to approximately 300°C, so most lambda probes have heating elements encased in the ceramic to bring the ceramic tip up to temperature quickly when the exhaust is cold. The probe typically has four wires attached to it: two for the lambda output, and two for the heater power.

Operation of the Zirconia O2 Sensor

The zirconium dioxide, or zirconia, lambda sensor is based on a solid-state electrochemical fuel cell called the Nernst cell. Its two electrodes provide an output voltage corresponding to the quantity of oxygen in the exhaust relative to that in the atmosphere. An output voltage of 0.2 V (200 mV) DC represents a lean mixture. That is one where the amount of oxygen entering the cylinder is sufficient to fully oxidize the carbon monoxide (CO), produced in burning the air and fuel, into carbon dioxide (CO2). A reading of 0.8 V (800 mV) DC represents a rich mixture, one which is high in unburned fuel and low in remaining oxygen. The ideal point is 0.45 V (450 mV) DC; this is where the quantities of air and fuel are in the optimum ratio, called the stoichiometric point, and the exhaust output will mainly consist of fully oxidized CO2. The voltage produced by the sensor is so nonlinear with respect to oxygen concentration that it is impractical for the electronic control unit (ECU) to measure intermediate values - it merely registers "lean" or "rich", and adjusts the fuel/air mixture to keep the output of the sensor alternating equally between these two values. This type of sensor is called 'narrow band', referring to the narrow range of fuel/air ratios to which the sensor responds. The main disadvantage of narrow band sensors is their slow response: the control unit determines the exhaust gas composition by averaging the high and low swings in the sensor's output, and this process creates an inevitable delay Not quite sure this oxygen sensor fits your vehicle? Feel free to contact our Tech Support. 7 trained Magnum representatives are looking forward to respond to your inquiry.

readings were as low as a brand new car

I changed all 4 of the o2 sensors on my G36 AMG. Fortunately the old ones screwed out easily. These new bosch sensors fit perfectly. I had the car smog tested a week after and the tech guy was shocked by my test results. He said my o2 sensor readings were as low as a brand new car.

difference was remarkable

I installed a fuel pac 3 months ago and purchased a set of four Bosch Sensors from Magnum last week for my GMS Savana. They shipped from stock the universal set-up o2 sensors at very affordable price. After installed the tuner I didn’t noticed marked improvement in power, I then proceeded to replace the 4 o2 sensors. I did not have any issue with the installation. Since all sensors expect for the right bank one are accessible they only needed some penetrating oil to remove. Installation is a breeze. Afterwards difference was remarkable. Truck came to life. I am very pleased.

9 of 13 people found this review helpful.

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its genuine bosch

Ordered to my car and it arrived ahead of schedule. O2 Sensor matched original signal wise and worked just right, its genuine bosch and price was fair but in return wiring sucks if you have no crimping tool. I didnt have. All in all 4-star despite their techs put every wheel into motion to guide me through the set up.

Bosch had been an OEM supplier

I bought these sensors for my 1997 Voyager at a local parts store for $95 a piece. I looked at (removed) and they less expensive so returned them and paid for negligible restocing fee. I was completely comfortable ordering them online because magnum made sure they are compatible with your car and I knew Bosch had been an OEM supplier so they would last a long time. Sensors were easy to install and plugged right into my factory harness. Whenever I have to buy oxygen sensors again, I'm definitely checking with magnum.

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Puzzling which oxygen sensor to pick to your Merkur Scorpio? Unsure where to find the hottest upgrades to a Car Truck SUV? We do have the answer. First of all, you have to decide what you need from the equipment. The magnum oxygen sensor is a perfect option to start with as it is quite easy to install and improves performance pretty much and improves performance. If you use the Car Truck SUV for racing, you will probably appreciate this oxygen sensors. With the help of this Scorpio mod, you will be able to take your Merkur one step higher. All the Merkur Scorpio oxygen sensors are ready to ship from stock and you will spend a fair amount of time to get everything done and keep on riding. Go through our oxygen sensor buyer reviews with an average rating of 4.5 out of 5 stars to find a product that is right for you.

Merkur Scorpio

By installing your authentic Magnum Merkur O2 sensor, you will be making a big leap in engine upgrade. Magnum O2 sensors are designed with your Automotive Vehicle in mind and will certainly make a difference in the way your Scorpio model gets up and goes. 7-day Technical Support provided by our tuning experts. Keep in mind you order your Merkur Scorpio part from the manufacturer. The best way to tackle all of that driving power and fuel economy is to install Merkur Scorpio Lambda sensor. Also do not miss to upgrade your fuel efficiency /while providing the ECU appropriate fluctuating signal wave and value comparing to the old, worn and stuck oxygen sensor/ with our part. As soon as Scorpio O2 sensor is fitted on the exhaust of your Automotive Vehicle, your ride will instantly produce more fuel economy because BOSCH Oxygen Sensor with Universal Wiring overrides the oxygen sensor signal. This is behind the working theory of the invaluable Merkur Scorpio Lambda sensor. NAME followed up his purchase as follows, Excellent from start to finish, very fast shipping product description was perfect as well. I like my BOSCH Oxygen Sensor with Universal Wiring. Once again many Thx!!